When we conduct patent inquiries, if we see that other people’s patented technology is the same as the one we applied for, then you can only use it with the permission of the patentee in accordance with the law. This means that we must ask for it in advance. The patent application is evaluated. So what is the patent evaluation? What are its characteristics? Let us summarize it for you. 1. Exclusivity means exclusivity, which means that within a certain period of time and in a certain area, no unit or individual may exploit its patent without the permission of the patentee, that is, it may not manufacture, use, offer for sale, or sell the patent for production and business purposes. , import its patented products or use its patented methods and manufacture, use, offer to sell, sell or import its patented products. 2. Regionality means: Patent right is a right with regional scope restrictions, which means that it is only valid within the area governed by law. Except in some cases, in accordance with international conventions for the protection of intellectual property rights and individual countries recognizing the validity of patent rights approved by another country, patent rights will be granted by the country in which a technical invention is patented, and only in the country where the patent is granted. It is only valid within the scope and has no legal binding effect on other countries, and other countries do not assume any protection obligations. However, the same invention can be patented in two or more countries at the same time. After being approved, the invention can obtain legal protection in all application countries. 3. Temporality means: a patent is only valid within the period specified by law. That is to say, after the effective protection period of the patent right expires, the patent right enjoyed by the patentee will automatically be lost and generally cannot be renewed. Article 33 stipulates: The validity period of patent protection shall be no less than the end of the twentieth year from the date of filing of the application.